Changing Over My Fluids

Elt31987 · **Posted:** Thu Jan 28, 2010 4:08 pm

So eventually im going to be switching over all the fluids, differentials,transfer case etc. Im planning on going Mobile 1 for everything since i already have used their oil since 3,000 miles. So the Transmission calls for ATF+4, Would this(http://www.mobiloil.com/USA-English/Mot ... c_ATF.aspx) work? or is it some other Mobile ATF needed. For the Transfer Case the same question since it uses the same fluid, and the same for power steering as it calls for ATF +4. For the Rear Differential im assuming (http://www.mobiloil.com/USA-English/Mot ... 140LS.aspx) will work as its 75W140 that is called for. Now for the front it calls for 80W90 but Mobile 1 only has (http://www.mobiloil.com/USA-English/Mot ... -90LS.aspx). Whats the difference, would one be better than the other and do you think putting in the 75W90 would void any warranty? Thanks

Diggerfreek · **Posted:** Thu Jan 28, 2010 4:12 pm

Elt31987 wrote:

So eventually im going to be switching over all the fluids, differentials,transfer case etc. Im planning on going Mobile 1 for everything since i already have used their oil since 3,000 miles. So the Transmission calls for ATF+4, Would this(http://www.mobiloil.com/USA-English/Mot ... c_ATF.aspx) work? or is it some other Mobile ATF needed. For the Transfer Case the same question since it uses the same fluid, and the same for power steering as it calls for ATF +4. For the Rear Differential im assuming (http://www.mobiloil.com/USA-English/Mot ... 140LS.aspx) will work as its 75W140 that is called for. Now for the front it calls for 80W90 but Mobile 1 only has (http://www.mobiloil.com/USA-English/Mot ... -90LS.aspx). Whats the difference, would one be better than the other and do you think putting in the 75W90 would void any warranty? Thanks

The gear lubes are cool, but that trans ATF will not work..... Valvoline makes ATF+4

Elt31987 · **Posted:** Thu Jan 28, 2010 4:22 pm

What about Royal Purple (http://www.royalpurple.com/transmission-fluid.html). This says Chrysler ATF +4?

tjkj2002 · **Posted:** Thu Jan 28, 2010 5:15 pm

Elt31987 wrote:

What about Royal Purple (http://www.royalpurple.com/transmission-fluid.html). This says Chrysler ATF +4?

The only ATF's approved by Chrysler for your Jeep that have the correct additive package.

http://centerforqa.com/licensedatf4brands.html

Notice no RP or Amsoil is on that list,they are not approved and do not have the correct additive package for your trans.

Elt31987 · **Posted:** Thu Jan 28, 2010 6:06 pm

tjkj2002 wrote:

Elt31987 wrote:

What about Royal Purple (http://www.royalpurple.com/transmission-fluid.html). This says Chrysler ATF +4?

The only ATF's approved by Chrysler for your Jeep that have the correct additive package.

http://centerforqa.com/licensedatf4brands.html

Notice no RP or Amsoil is on that list,they are not approved and do not have the correct additive package for your trans.

Gotcha, Thanks

tj, as for the Differentials do you think the other choices in my first post will be good?

racer1 · **Posted:** Thu Jan 28, 2010 9:18 pm

I have not had real good luck with the Mobil synthetic gear lube's in our race car. Turns rancid black and we had some bearings that looked funny and we changed them out. I went back to Red Line gear oil. Just my opinion. Also had some fulcrum plate galling in the VW tranny we tried it in. The oil is find. This was a Hewland LD-200 tranny with straight cut gears.

Dave

tjkj2002 · **Posted:** Thu Jan 28, 2010 9:22 pm

Elt31987 wrote:

tjkj2002 wrote:

Elt31987 wrote:

What about Royal Purple (http://www.royalpurple.com/transmission-fluid.html). This says Chrysler ATF +4?

The only ATF's approved by Chrysler for your Jeep that have the correct additive package.

http://centerforqa.com/licensedatf4brands.html

Notice no RP or Amsoil is on that list,they are not approved and do not have the correct additive package for your trans.

Gotcha, Thanks

tj, as for the Differentials do you think the other choices in my first post will be good?

Yep the M1 75w-140 gear oil will be more then good for your diffs.

Elt31987 · **Posted:** Fri Jan 29, 2010 2:06 pm

OK cool, the front axle calls for 80W90, should i use the Mobile 1 75W-90 or put the 75W140 in both?

67Customs · **Posted:** Fri Jan 29, 2010 5:05 pm

tjkj2002 wrote:

Elt31987 wrote:

What about Royal Purple (http://www.royalpurple.com/transmission-fluid.html). This says Chrysler ATF +4?

The only ATF's approved by Chrysler for your Jeep that have the correct additive package.

http://centerforqa.com/licensedatf4brands.html

Notice no RP or Amsoil is on that list,they are not approved and do not have the correct additive package for your trans.

I can't find the Mobil ATF +4 nor the Mobil Super ATF +4 for sale that is on that list.

Fatnate · **Posted:** Sat Jan 30, 2010 12:05 am

There isn't really a point in changing the Trans fluid unless you can get the oil out of the converter. It holds over 2/3s of all the ATF.

Elt31987 · **Posted:** Fri Feb 05, 2010 10:42 am

Ok im going to stick with Mobile 1 for the front and rear diffs. Anybody know how much oil is needed for the front and how much for the rear? Also do you recommend a gasket seal or using the rubbery sealant in a tube? Thanks

tjkj2002 · **Posted:** Fri Feb 05, 2010 11:21 pm

Elt31987 wrote:

Ok im going to stick with Mobile 1 for the front and rear diffs. Anybody know how much oil is needed for the front and how much for the rear? Also do you recommend a gasket seal or using the rubbery sealant in a tube? Thanks

You will need 4qts between the F/R and will have some left over.The front should have a fill/drain plug and use RTV on the rear.

Elt31987 · **Posted:** Fri Feb 05, 2010 11:28 pm

Perfect, Thanks for all the help fellas

Elt31987 · **Posted:** Fri Feb 26, 2010 11:43 am

Any preference on RTV Sealant, and has anyone gotten that Rock Crusher installed on the 8.25 with stock trackbar yet?

Diggerfreek · **Posted:** Fri Feb 26, 2010 4:00 pm

Elt31987 wrote:

Any preference on RTV Sealant, and has anyone gotten that Rock Crusher installed on the 8.25 with stock trackbar yet?

Most use black...

Changing Over My Fluids

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